Cabin dehumidification structure of oiling ship

Abstract

The utility model relates to an oil ship cabin dehumidification structure which comprises an air inducing pipe, one end of the air inducing pipe is arranged outside a cabin and communicated with the atmosphere, the other end of the air inducing pipe is connected with an air inlet of a treatment area of a dehumidification device through a drying fan, and an air outlet of the treatment area of the dehumidification device is connected with an air inlet pipe penetrating into the cabin. An air return pipe is connected to the cabin, a heater is arranged on the air return pipe, the output end of the air return pipe is connected with an air inlet of a regeneration area of a dehumidification device, an air outlet of the regeneration area of the dehumidification device is connected with an air outlet pipe through a heat pipe exchanger, and an adjusting mechanism for adjusting the proportion of a processing area and the regeneration area is arranged on the dehumidification device. The other end of the air outlet pipe is connected with a regeneration fan, an air outlet of the regeneration fan is connected with one end of a circulating pipe through a plate heat exchanger, and the heat source output end of the plate heat exchanger is connected with an air return pipe on the air inlet end side of the heater and used for preheating cold air entering the heater. And the other end of the circulating pipe is connected with the air inducing pipe. The dehumidification structure not only can recover heat energy and reduce energy consumption, but also can adjust the proportion of the regeneration area and the treatment area of the dehumidification device.

Description

Technical Field

[0001] This utility model relates to a dehumidification structure for the cabin of an oil tanker. Background Technology

[0002] After transporting cargo, oil tankers typically require cleaning of their holds, followed by drying. Existing drying and dehumidification systems for oil tankers use electric heaters to heat the air, which is then combined with dehumidifiers. However, electric heaters are energy-intensive and lack heat recovery mechanisms. Furthermore, the ratio of the regeneration zone to the treatment zone in the dehumidification system is fixed and cannot be adjusted according to requirements. Therefore, a new dehumidification structure for oil tanker holds is needed. Utility Model Content

[0003] The purpose of this invention is to provide a dehumidification structure for the cabin of an oil tanker. This dehumidification structure can not only recover heat energy and reduce energy consumption, but also adjust the ratio of the regeneration zone to the treatment zone of the dehumidification device.

[0004] The technical solution of this utility model is as follows: a dehumidification structure for the cabin of an oil tanker, comprising an exhaust duct with one end located outside the cabin and communicating with the atmosphere, the other end of the exhaust duct being connected to the air inlet of the processing zone of a dehumidification device via a drying fan, the air outlet of the processing zone of the dehumidification device being connected to an air inlet duct penetrating into the cabin, a return air duct being connected to the cabin, a heater being installed on the return air duct, the output end of the return air duct being connected to the air inlet of the regeneration zone of the dehumidification device, the air outlet of the regeneration zone of the dehumidification device being connected to an air outlet duct via a heat pipe heat exchanger, an adjustment mechanism for adjusting the ratio of the processing zone to the regeneration zone being installed on the dehumidification device, the other end of the air outlet duct being connected to a regeneration fan, the air outlet of the regeneration fan being connected to one end of a circulation pipe via a plate heat exchanger, the heat source output end of the plate heat exchanger being connected to a return air duct connected to the air inlet side of the heater for preheating the cold air entering the heater, and the other end of the circulation pipe being connected to the exhaust duct.

[0005] Furthermore, a first filter and a first electric regulating valve are installed on the air inlet end of the air duct, and a NACA airfoil guide plate is also provided inside the air duct.

[0006] Furthermore, the dehumidification device includes a chamber shell, and a dehumidification wheel is rotatably connected inside the chamber shell via a rotating shaft. A pair of partitions are provided at the same position on both sides of the dehumidification wheel inside the chamber shell. Each pair of partitions, together with the corresponding side wall of the chamber shell and the circumferential wall of the chamber shell, forms a small fan-shaped regeneration chamber, and a large fan-shaped regeneration chamber.

[0007] Furthermore, the adjustment mechanism includes one end of a partition fixed to the housing shell, the other end of which is fixed with a shaft for the rotating shaft to pass through, one end of another partition fixed with a sleeve portion fitted outside the shaft portion, the other end of the other partition close to the circumferential wall of the housing shell, an arc-shaped groove being formed in the side wall of the housing shell, a drive screw passing through the arc-shaped groove and an arc-shaped sealing gasket located inside the housing shell and used to cover the arc-shaped groove being fixed in the middle of the other partition, and a locking nut being screwed to the end of the drive screw that protrudes from the housing shell.

[0008] Furthermore, sealing strips are provided at the ends of the two partitions that are close to the side wall of the hopper and at the sides that are close to the dehumidification impeller.

[0009] Furthermore, the dehumidifying impeller includes a modified silicone rubber layer on the inner layer, a layer of nano-alumina particles on both sides of the modified silicone rubber layer, and a layer of fluorocarbon hydrophobic coating on the outer layer of the nano-alumina particles layer.

[0010] Furthermore, the hopper shell and partitions are made of 316L stainless steel, and the side walls, circumferential walls, and partition surfaces of the hopper shell are all coated with a ceramic coating.

[0011] Furthermore, a second electric regulating valve is installed in the end of the air inlet pipe near the cabin, and a temperature and humidity sensor is installed in the end of the air inlet pipe that enters the cabin.

[0012] Furthermore, a second filter is provided at the air inlet end of the return air duct, a third electric regulating valve is provided between the second filter and the heater, and a NACA airfoil deflector is provided inside the return air duct between the heater and the dehumidification device.

[0013] Furthermore, a fourth electric regulating valve is provided inside the end where the circulation pipe connects to the exhaust pipe; the inner walls of the circulation pipe, exhaust pipe, inlet pipe, return pipe, and outlet pipe are all provided with a ceramic coating.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. This dehumidification structure, by adding a plate heat exchanger, achieves a heat exchange efficiency of ≥85%, and the recovered heat energy can be used to preheat the cold air entering the heater, which helps to save energy consumption; and a heat pipe heat exchanger is also provided to help recover the latent heat of the humid air.

[0016] 2. This dehumidification structure, by making one of the partitions adjustable, helps to adjust the ratio of the regeneration zone and the treatment zone of the dehumidification device within a certain range.

[0017] 3. The dehumidification rotor of this dehumidification structure adopts a structure of modified silica gel, nano alumina particles, and fluorocarbon hydrophobic coating, which helps to increase adsorption capacity and reduce energy consumption.

[0018] 4. The dehumidification structure's casing is made of 316L stainless steel, and key components are coated with ceramic coating. The flange connections use titanium alloy gaskets, which can adapt to salt spray corrosion environments and improve service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a side view of the dehumidification device of this utility model;

[0021] Figure 3 This is a side view of the dehumidification device of this utility model after the side wall end cap has been removed;

[0022] Figure 4 This is a perspective view of the dehumidification device of this utility model after the side wall end cap has been removed;

[0023] Figure 5 This is a cross-sectional view of the dehumidifying rotor of this utility model;

[0024] In the diagram: 1-Ship compartment; 2-Exhaust duct; 21-First filter; 22-First electric regulating valve; 23-NACA airfoil deflector; 3-Drying fan; 4-Dehumidification device; 41-Shell; 411-Circumferential wall; 412-Side wall; 413-Arc groove; 42-Rotating shaft; 43-Dehumidification wheel; 431-Modified silica gel; 432-Nano-alumina particle layer; 433-Fluorocarbon hydrophobic coating; 44a-One partition; 44b-The other partition; 441-Shaft; 442-Sleeve section; 443-Drive screw; 44 4-Arc-shaped sealing gasket 445-Sealing strip 446-Support plate 45-Regeneration zone chamber 46-Processing zone chamber 47-Motor 48-Belt 5-Inlet duct 51-Second electric regulating valve 52-Temperature and humidity sensor 6-Return air duct 61-Second filter 62-Third electric regulating valve 63-NACA airfoil guide vane 7-Heater 8-Heat pipe heat exchanger 9-Outlet duct 10-Regeneration fan 11-Plate heat exchanger 12-Circulation pipe 121-Fourth electric regulating valve 13-Pipeline Detailed Implementation

[0025] To make the above-mentioned features and advantages of this utility model more easily understood, specific embodiments are described below in conjunction with the accompanying drawings, but this utility model is not limited thereto.

[0026] refer to Figures 1 to 5

[0027] A dehumidification structure for an oil tanker cabin includes an exhaust duct 2 with one end connected to the atmosphere outside the cabin 1. The other end of the exhaust duct is connected to the air inlet of the treatment zone of a dehumidification device 4 via a drying fan 3. The air outlet of the treatment zone of the dehumidification device is connected to an air inlet duct 5 that penetrates into the cabin. A return air duct 6 is connected to the cabin. A heater 7 is installed on the return air duct. The output end of the return air duct is connected to the air inlet of the regeneration zone of the dehumidification device. The air outlet of the regeneration zone of the dehumidification device is connected to an air outlet duct 9 via a heat pipe heat exchanger 8. The dehumidification device is equipped with an adjustment mechanism for adjusting the ratio of the treatment zone to the regeneration zone. The other end of the air outlet duct is connected to a regeneration fan 10. The air outlet of the regeneration fan is connected to one end of a circulation pipe 12 via a plate heat exchanger 11. The heat source output end of the plate heat exchanger is connected to the return air duct on the air inlet side of the heater via a pipe 13 to preheat the cold air entering the heater, thereby realizing heat energy recovery and utilization and reducing energy consumption. The other end of the circulation pipe is connected to the exhaust pipe so that regenerated air can be supplied to the exhaust pipe.

[0028] In this embodiment, a first filter 21 and a first electrically adjustable valve 22 are installed on the air inlet end of the air duct, and a NACA airfoil deflector 23 is also provided inside the air duct. The first filter filters the input air, and the first electrically adjustable valve can adjust the amount of air input into the atmosphere according to the humidity of the cabin; the NACA airfoil deflector helps to reduce turbulence.

[0029] In this embodiment, the dehumidification device includes a housing 41. A dehumidification rotor 43 is rotatably connected to the housing via a rotating shaft 42. A pair of partitions are positioned at the same location on both sides of the dehumidification rotor within the housing. Each pair of partitions, together with the corresponding side wall and circumferential wall of the housing, forms a small fan-shaped regeneration chamber 45, and a large fan-shaped regeneration chamber 46. The regeneration chambers on both sides, together with the dehumidification rotor portion within the small fan-shaped regeneration chamber, constitute the regeneration zone; the regeneration chambers on both sides, together with the dehumidification rotor portion within the large fan-shaped regeneration chamber, constitute the regeneration zone.

[0030] In this embodiment, to adjust the ratio of the treatment zone to the regeneration zone, the adjustment mechanism includes a partition 44a, one end of which is fixed to the housing, and the other end of which is fixed with a shaft 441 for the rotating shaft to pass through. To ensure the strength of the periphery and provide support, a support plate 446, the lower end of which is fixed to the housing, is also fixed to the periphery. One end of the other partition is fixed with a sleeve 442 that fits outside the shaft, and the other end of the other partition is close to the circumferential wall 411 of the housing. The side wall 412 of the housing has an arc-shaped groove 413. The middle of the other partition is fixed with a drive screw 443 that passes through the arc-shaped groove and an arc-shaped sealing gasket 444 located inside the housing to cover the arc-shaped groove, thereby improving the sealing performance. A locking nut is screwed to the end of the drive screw that protrudes from the housing. By loosening the locking nut, the drive screw can drive the other partition to rotate around the sleeve, thereby adjusting the fan-shaped partition of the dehumidification rotor. This adjustment mechanism allows for the adjustment of the processing area to a ratio of 60% to 75% and the regeneration area to a ratio of 25% to 40%, enabling dynamic adjustment of the sector area based on humidity load.

[0031] In this embodiment, in order to improve the sealing performance of the fan-shaped partition, a sealing strip 445 is provided at the ends of the partition plates close to the circumferential wall and side wall of the chamber shell, as well as at the side edge close to the dehumidification wheel. The installation of the sealing strip should not affect the rotation of the dehumidification wheel.

[0032] In this embodiment, the dehumidifying impeller includes a modified silica gel 431 as the inner layer, a layer of nano-alumina particles 432 on both sides of the modified silica gel, and a fluorocarbon hydrophobic coating 433 covering the outer layer of the nano-alumina particles. The modified silica gel is enhanced with chemical grafting technology to enhance its hydrophilicity; specifically, hydrophilic modified silica gel can be used. The nano-alumina particles, with their high specific surface area (≥200 m² / g) and strong adsorption capacity, quickly adsorb moisture when humidity fluctuates, preventing the modified silica gel from degrading due to repeated adsorption and desorption. The fluorocarbon hydrophobic coating is a fluorocarbon paint that effectively prevents seawater mist from condensing on the surface of the dehumidifying impeller, extending its service life.

[0033] In this embodiment, a belt 48 is fitted around the circumference of the dehumidifying rotor. The belt is driven by a motor 47 via a pulley, thereby causing the dehumidifying rotor to rotate.

[0034] In this embodiment, in order to increase service life and adapt to salt spray corrosion environment, the silo shell and partition are made of 316L stainless steel, and the side walls, circumferential walls and partition surfaces of the silo shell are all coated with a ceramic coating with a thickness of ≥200μm.

[0035] In this embodiment, a second electrically operated regulating valve 51 is installed at the end of the air inlet duct near the cabin, and a temperature and humidity sensor 52 is installed at the end of the air inlet duct that enters the cabin. The airflow entering the cabin is adjusted by the second electrically operated regulating valve.

[0036] In this embodiment, in order to filter the air entering the return air pipe, a second filter 61 is provided at the air inlet end of the return air pipe; a third electric regulating valve 62 is provided between the second filter and the heater so as to regulate the air volume entering the return air pipe; a NACA airfoil guide vane 63 is provided inside the return air pipe between the heater and the dehumidification device to help reduce turbulence.

[0037] In this embodiment, a fourth electric regulating valve 121 is provided inside the end where the circulation pipe connects to the exhaust pipe to adjust the air volume entering the exhaust pipe; the inner walls of the circulation pipe, exhaust pipe, inlet pipe, return pipe and outlet pipe are all provided with a ceramic coating with a thickness of ≥200μm to reduce corrosion of each pipe.

[0038] In this embodiment, titanium alloy gaskets are used at the connections between the components and at the flange connections between the dehumidification device and each pipe, which effectively improves the corrosion resistance.

[0039] In another embodiment, a low-temperature heat pump system can be introduced, utilizing waste heat from the ship (such as diesel engine cooling water) to drive the heat pump, raising the regenerated air temperature to 110°C and reducing the energy consumption of the electric heater. Temperature and humidity sensors, as well as dew point sensors, can also be installed at the air outlet of the regeneration zone and the air inlet of the treatment area of ​​the dehumidifier to detect temperature, humidity, and dew point conditions. These sensors, in conjunction with the temperature and humidity sensors in the ship's cabin, can adjust the opening of various valves to regulate the heating temperature of the heater and prevent localized over-dehumidification.

[0040] When dehumidification is required, the first electric regulating valve 22, the second electric regulating valve 51, and the drying fan 3 are opened to draw in cold air treated by the first filter 21. After the air passes through the treatment chamber of the dehumidification device 4 to absorb moisture, the dried air is sent into the cabin 1. The third electric regulating valve 62 is opened to turn on the regeneration fan 10 and the heater 7, drawing air out of the cabin. The air, which has become humid again due to absorbing moisture from the cabin, is heated by the heater 7 to form hot wet steam. After being dried in the regeneration zone of the dehumidification device 4, the air is returned to the exhaust duct through the circulation pipe 12 and then sent back into the cabin, achieving the purpose of circulating dehumidification. Alternatively, the humidity in the cabin can be detected by the temperature and humidity sensor 52. The temperature and humidity sensor can be electrically connected to the motor of the dehumidification impeller and each electric regulating valve through the controller, so as to adjust the air intake and the rotation speed of the dehumidification impeller according to the humidity of the cabin.

[0041] If the terms "first" and "second" are used in the above description to define the components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of distinguishing the components in the description. Unless otherwise stated, the above terms have no special meaning.

[0042] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws) or a non-detachable fixed connection (e.g., riveting or welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0043] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in this utility model above include states or shapes that are similar to, close to, or approximate with them.

[0044] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0045] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. An oil tanker hold dehumidifying structure comprising a draft tube provided at one end outside a hold and communicating with the atmosphere, characterized in that, Another end of the air intake pipe is connected with an air inlet of a treatment area of the dehumidifying device through a drying fan, an air inlet pipe penetrating into the cabin is connected with an air outlet of the treatment area of the dehumidifying device, a return air pipe is connected to the cabin, a heater is arranged on the return air pipe, an output end of the return air pipe is connected with an air inlet of a regeneration area of the dehumidifying device, an air outlet of the regeneration area of the dehumidifying device is connected with an air outlet pipe through a heat pipe heat exchanger, an adjusting mechanism for adjusting the proportion of the treatment area and the regeneration area is arranged on the dehumidifying device, another end of the air outlet pipe is connected with a regeneration fan, an air outlet of the regeneration fan is connected with one end of a circulating pipe through a plate heat exchanger, a heat source output end of the plate heat exchanger is connected with the return air pipe on the side of the air inlet end of the heater, so as to preheat the cold air entering the heater, and another end of the circulating pipe is connected with the air intake pipe.

2. The oil ship cabin dehumidification structure according to claim 1, wherein A first filter and a first electric regulating valve are arranged on the air inlet end of the air intake pipe, and a NACA airfoil guide plate is further arranged in the air intake pipe.

3. The oil ship cabin dehumidification structure according to claim 1 or 2, characterized in that, The dehumidifying device comprises a shell, a dehumidifying runner is rotationally connected to the shell through a rotating shaft, and a pair of partition plates are arranged at the same position on both sides of the dehumidifying runner in the shell; a small sector formed by each pair of partition plates and the side wall and the circumferential wall of the shell on the corresponding side forms a regeneration area chamber, and a large sector forms a treatment area chamber.

4. The oil ship cabin dehumidification structure according to claim 3, wherein One end of one of the partition plates is fixed to the shell, the other end of the one partition plate is fixed with a shaft portion through which the rotating shaft passes, one end of the other partition plate is fixed with a sleeve portion which is sleeved outside the shaft portion, the other end of the other partition plate is close to the circumferential wall of the shell, an arc-shaped groove is formed in the side wall of the shell, a drive screw which passes through the arc-shaped groove is fixed to the middle part of the other partition plate, and an arc-shaped sealing gasket which is used for shielding the arc-shaped groove is arranged on the inner side of the shell, and a lock nut is screwed on the end of the drive screw which passes out of the shell.

5. The oil ship cabin dehumidification structure according to claim 3, wherein Sealing strips are arranged on the end of each pair of partition plates which is close to the side wall of the shell and on the side edge of each pair of partition plates which is close to the dehumidifying runner.

6. The oil ship cabin dehumidification structure according to claim 3, wherein The dehumidifying runner comprises modified silica gel in the inner layer, a layer of nano-alumina particle layer on both sides of the modified silica gel, and a layer of fluorocarbon hydrophobic coating on the outer layer of the nano-alumina particle layer.

7. The oil ship cabin dehumidification structure according to claim 3, wherein The shell and the partition plates are made of 316L stainless steel, and ceramic coating is sprayed on the side wall, the circumferential wall and the surface of the partition plates.

8. The oil ship cabin dehumidification structure according to claim 1, wherein A second electric regulating valve is arranged in the end of the air inlet pipe which is close to the cabin, and a temperature and humidity sensor is arranged on the end of the air inlet pipe which penetrates into the cabin.

9. The oil ship cabin dehumidification structure according to claim 1, wherein A second filter is arranged on the air inlet end of the return air pipe, a third electric regulating valve is arranged between the second filter and the heater, and a NACA airfoil guide plate is arranged in the return air pipe between the heater and the dehumidifying device.

10. The oil ship cabin dehumidification structure according to claim 1, wherein A fourth electric regulating valve is arranged in the end of the circulating pipe which is connected with the air intake pipe; ceramic coating is arranged on the inner walls of the circulating pipe, the air intake pipe, the air inlet pipe, the return air pipe and the air outlet pipe.

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